PSS Shaft Seal Install Instructions - PYI Inc.

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IMPORTANT INSTRUCTIONS-READ BEFORE STARTING!IMPORTANT! - BEFORE STARTING YOUR INSTALLATION CAREFULLYREAD THE FOLLOWING WARNINGS AND INSTRUCTIONS. FAILURETO PROPERLY FOLLOW THE WARNINGS AND INSTRUCTIONSCOULD LEAD TO PERSONAL INJURY OR EVEN DEATH, OR PHYSICAL,ENVIRONMENTAL OR PROPERTY DAMAGE.• READ AND FOLLOW THE INSTRUCTIONS THOROUGHLY! The PSS (Packless Sealing System) ShaftSeal (“PSS”) you are preparing to install is a through-hull fitting that protects against water fromentering the boat where the shaft enters the hull, when properly installed and maintained. Makesure that you or your designated installer is a qualified professional, knowledgeable and skilled tointsall the PSS correctly, and you have all the required tools and additional equipment on hand beforebeginning installation.• If removing the engine transmission for repair or if launching the boat without a transmission installed,then the shaft must be kept in place with a device that will secure the shaft with the PSS below in itsnormal “compressed mode”.• Install the PSS ONLY with the boat out of the water.• DO NOT USE oil, grease (petroleum products) or silicone products at any time during the installation.Use soap and water to lubricate the o-rings of the rotor when sliding it down the shaft.• Clean the seal area of your boat so you do not contaminate the seal surface with dirt, oil or otherforeign matter. Do not damage or scratch the face of the carbon or the face of the stainless steel rotorduring unpacking or while handling or installing the PSS.• There should be a total of four (4) set screws in the two holes of the rotor (2 sets screws in each hole).If you must move the stainless steel rotor, make sure to remove the top set screws in order to access thebottom two set screws.• Do not re-use the supplied cupped pointed set screws. If multiple tightening has flattened the cuppedpointset screw, replace the affected screw with a new one.• There should be a total of four (4) hose clams securing the bellows ends. These clamps should bereplaced if they show any sign of corrosion.• Replace the nylon barb if seal runs dry.• Do not tighten or replace the installed nylon hose barb fitting with a metallic fitting (bronze or stainlesssteel). Metal hose barbs will damage the carbon and destroy the PSS.• Do not slide the aft bellow cuff too far down over the stern tube. The leading edge of the stern tubecould cause damage to the inner ribs of the bellow and improperly limit the bellow movement andtravel.• If fitting a vent line (boats under 12 knots), do not run a loop at the top end of the hose as this couldpromote a siphon and water could be near it.• If the boat sits idle for a long period of time (generally 3 months or more), it is necessary to move thecarbon face back to allow a small amount of water to enter the boat.• As with any hose under the waterline, the PSS bellows must be inspected on a regular basis (i.e., noless than at least every 6 months under most circumstances) and checked for any signs of deterioration(cracks, splits, tears, brittleness, or other signs). Upon any sign of deterioration the bellow must bereplaced. As preventive maintenance the bellow should be replaced no less than every six (6) years,regardless of its apparent condition.• Do not allow any petroleum-based liquid or corrosive material to come in contact with the PSS. Takecare to ensure that this does not occur, for example, when performing any general maintenance, orwinterizing the engine.• The shaft should be near centered and run parallel to the shaft log.• Do not use an ozone generator (e.g., air cleaner) in or around your boat. The extra ozone will speedup the deterioration of any rubber product, including the PSS bellow.• The bellows will need more frequent inspection and replacement in an environment where non-sealedbatteries emit sulfuric acid vapors. Sulfuric acid vapors will accelerate deterioration of any rubbermaterials including the PSS bellows.• Do not use sealant to fit the bellow to the stern tube or the hose to hose barb.• Do not run dry.• Do not use the PSS SEAL on a submarine vehicle.1
INSTALLATION INSTRUCTIONS1 Propeller Shaft62 Shaft Log (Stern Tube)7345Stainless Steel Hose Clamps x4Nitrile Bellow x1Carbon Graphite Flange x189Stainless Steel Rotor x1Stainless Steel Set Screwsx5 / 4 for rotor, 1 spareNitrile O-Rings2 in rotor / 2 spareNylon Hose Barb Fitting10 Clamp Jackets x4IN ALL CASES, THE BOAT MUST BE OUT OF THE WATER TO PERFORM THISINSTALLATION.1. Unbolt the shaft coupling from the transmission coupling.2. Remove the shaft coupling from the shaft. Coupling styles will vary by manufacturer.Some couplings use set screws to keep the coupling in place, while others use a rollpin and others use a nut (always use the appropriate tools and procedures for yourparticular application).3. Remove the old stuffing box and packing material. There are three types of packingglands that can be found on most boats: “Classic”, “Bolt On” and “Threaded”.4. Clean the entire exposed portion of the shaft with very fine sand paper (# 400 or# 600 grit) in order to remove any debris or rough edges. Pay particular attention tothe keyway located at the forward end of the shaft, where the stainless steel rotor willpass. The shaft and keyway must NOT have any sharp edges that could damage theo-rings upon installation.2
Page 1: videos atwww.shaftseal.comSHAFT SEA
Page 5 and 6: 12. Slide the stainless steel rotor
Page 7 and 8: B. Spray or mist during operation a

PSS Shaft Seal Install Instructions - PYI Inc.

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